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Buffers
Page 2
Questions (88)
Find the grams of NaF added to 300ml of .2M HF to create a buffer with pH=3.5.
7 answers
asked by
corey
557 views
A buffer is made by dissolving H3PO4 and NaH2PO4 in water. a. write an equation that shows how this buffer neutralizes a small
4 answers
asked by
marcy
5,266 views
A buffer solution contains 0.200 M NH3 and 0.250 M NH4Cl. What is the pH of the buffer solution after the addition of 10.0 mL of
1 answer
asked by
Brett
1,176 views
How would you prepare 500 ml of a 1.8 M phosphate buffer (pH 6.8) containing 4.5 x 10-6 M CaCl2 and 52 mM sucrose?
2 answers
asked by
steven
1,055 views
Your laboratory supervisor directs you to prepare 500.0 mL of a buffer with a pH of 9.40. You have available all the weak acids
1 answer
asked by
Sandra T.
1,088 views
A buffer that is 0.271 M in acid, HA, and 0.150 M in the potassium salt of its conjugate base, KA, has a pH of 2.85. What is the
2 answers
asked by
Rachel
999 views
Calculate the pH of the 0.20 M NH3/0.20 M NH4Cl buffer. What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl
4 answers
asked by
Kelly
1,022 views
A 130.0 mL buffer solution is 0.100 M in NH3 amd 0.135 M in NH3 and 0.135 M in NH4Br. What mass of HCI could this buffer
2 answers
asked by
Samuel
983 views
Using a 0.20 M phosphate buffer with a pH of 6.5, you add 0.72 mL of 0.46 M NaOH to 58 mL of the buffer. What is the new pH of
2 answers
asked by
Mack
970 views
A buffer prepared by mixing equal amounts of the salts Na2HPo4 and NaH2PO4 to give a total phosphate concentration of 0.1M. What
1 answer
asked by
Richard
889 views
You are asked to prepare a pH=4.00 buffer starting from 1.50 L of 0.0200 \; M solution of benzoic acid C_6 H_5COOH and an excess
4 answers
asked by
Josh G.
1,384 views
I actually posted this up before and Gk helped out but i don't understand the steps what do i enter for the pka for the first
4 answers
asked by
Saira
1,164 views
What is the pH of a buffer solution of 0.125M Acetic acid and 0.250M Sodium acetate? the Pk of Acetic acid is 4.76
2 answers
asked by
Kumar
810 views
I have a 1L solution of 0.02M sodium acetate and 0.02M acetic acid. What is the pH after the addition of 0.05 moles of
2 answers
asked by
Alex
770 views
A chemist needs to prepare a buffer using the carbonate system (information in the table below) with a final pH of 6. Which
2 answers
asked by
J
790 views
Which pairs of substances will form a buffer when mixed in equal concentrations?
2 answers
asked by
krissy
761 views
Explain what is required to create a buffer that needs to protect the pH between 8.1 and 8.5. EXPLAIN IN DETAIL
2 answers
asked by
Symone
694 views
Why can't milk of magnesia (Mg(OH)2), act as a buffer?
2 answers
asked by
Michelle
727 views
Given that the Ka of benzoic acid is 6.50 x 10-5, how would one prepare 0.500 L of a benzoic acid/sodium benzoate buffer of a
3 answers
asked by
Nadine
693 views
what is the pH change after the addition of 10mL of 1.0M sodium hydroxide to 90mL of a 1.0M NH3/1.0M NH4^+ buffer? Kb ammonia=
3 answers
asked by
marie
675 views
What does a buffer do?
A. It resists a change in pH when H+ or OH- is added to a solution. B. It prevents an acid-base reaction
2 answers
asked by
jessie
611 views
Which pairs of substances will form a buffer when mixed in equal concentrations?
A)NaOH and HCl B)NH3 and NH4+ C)H2O and NH3
1 answer
asked by
Pierre
638 views
Given that the Ka of benzoic acid is 6.50 x 10-5, how would one prepare 0.500 L of a benzoic acid/sodium benzoate buffer of a
2 answers
asked by
Mike
613 views
A buffer with a pH of 4.30 contains 0.25 M of sodium benzoate and 0.20 M of benzoic acid. What is the concentration of [H ] in
2 answers
asked by
noel
584 views
All of the following acid-base pairs are examples of buffers EXCEPT: (Question from "Cracking the MCAT, 2010-2011 edition" by
4 answers
asked by
danny
588 views
what makes a good buffer? is it that it has a strong base and a strong acid?
and why is blood a good buffer? is that because the
2 answers
asked by
joyce
572 views
You have made a buffer solution where you added 9 mL 1M Acetic Acid and 0.82 grams Sodium Acetate and diluted it with deionized
2 answers
asked by
Anonymous
570 views
How could you prepare a buffer if only acetic acid, HCl and NaOH are available? If you must have a weak acid and a conjugate
3 answers
asked by
Wendy
572 views
A buffer prepared by mixing equal amounts of the salts Na2HPo4 and NaH2PO4 to give a total phosphate concentration of 0.1M. What
2 answers
asked by
Richard
538 views
A basic buffer is prepared by adding 0.3310g of NH4Cl to 1.00L of 0.2088 M NH3. Kb (NH3) = 1.8x10-5.
2 answers
asked by
lara
537 views
Calculate the molar concentration of ethanoic acid needed to prepare ethanoate buffer of PH 6.8 using 0.5m solution of sodium
2 answers
asked by
Aminat
545 views
Is it possible to make a buffer with a strong acid and a strong base?
So I know a buffer consists of a weak acid and its
3 answers
asked by
Anonymous
520 views
A hypothetical diprotic acid has pKa1=5 and pka2=7. Could a buffer at pH6 be prepared with this acid? If so how?
2 answers
asked by
Yoo
504 views
What volume of 0.170 M K3PO4(aq) must be added to 50.3 mL of 0.103 M K2HPO4(aq) to prepare a buffer solution with a pH of 12.09?
2 answers
asked by
Jamie
489 views
3 buffers in the human body and what are their conjugate acid-base pairs?
I have Bicarbonate Buffer, Phosphate/Ammonia Buffer,
3 answers
asked by
Mandie
497 views
A typical buffer used by biochemists is called Tris, which can be depicted as R3N. A buffer that is prepared by mixing 500ml of
1 answer
asked by
Josh
505 views
a 2.00l buffer contains 1.00 mol HNO3 mixed with 1.00mol NaNO2
a. write the relevant ionization equation for this buffer. b.
1 answer
asked by
mehek
457 views
What do we call solutions composed of weak acids and weak bases (just like acetic acid and sodium acetate)? Alternatively, we
1 answer
asked anonymously
25 views
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Parent Categories (16)
Acid and Base
Acid-Base Chemistry
Acid-Base Equilibrium
Acid-base reactions
Acids and Bases
Aqueous Solutions
Biochemistry
Chemical Reactions
Chemistry
Equilibrium
Laboratory Techniques
Solutions
Solutions and Acids/Bases
Solutions and Concentrations
Solutions and Mixtures
Solutions and pH